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说明: 认知无线电技术的提出是为提高频谱利用率,而认知无线实现的关键技术是频谱感知,众所周知协作检测提高了衰落环境中认知用户系统检测的性能,该文章是基于协作检测提出新的检测方案,利用了双门限方法提高了系统性能,兼顾带宽有限和增强性能两个方面,是基于门限检测的协作检测性能优化的前提。对以后门限优化协作检测非常有用。(In this paper, we employ a double threshold method in energy detector to perform spectrum sensing, while a fusion center in the cognitive radio network collects the local decisions and observational values of the secondary users, and then makes the final decision to determine whether the primary user is absence or not. Simulation results will show that the spectrum sensing performance channels is improved significantly under the proposed scheme as opposed to the conventional method.)
- 2010-04-14 21:02:35下载
- 积分:1
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MATLAB-
matlab图像增强程序举例图像增强程序举例(Matlab image enhancement, for example)
- 2013-03-15 16:34:05下载
- 积分:1
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Main_CC_Luzhenbo
可用于分析混沌时间序列 C-C方法分析混沌时间序列(Can be used for the analysis of chaotic time series analysis of chaotic time series CC)
- 2012-10-31 14:53:44下载
- 积分:1
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waveletandcomp
根据对所输入的png格式的真彩图像、小波类型(db9或haar)和相应的阈值进行了三级非标准小波harr或db9的分解和重构,从而达到了对原图像的压缩处理的
(Entered based on the true color of the png format images, wavelet type (db9 or haar) and the corresponding threshold for the three non-standard or harr wavelet decomposition and reconstruction of the db9 to achieve a compression of the original image processing)
- 2009-06-05 09:25:39下载
- 积分:1
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LFM_MF
雷达LFM信号匹配滤波程序,压缩带宽,列出了匹配滤波器的系统函数(Radar LFM signal matched filtering process, compression, bandwidth)
- 2012-04-18 16:30:50下载
- 积分:1
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Butterworth_Filters_v1
巴特沃斯滤波器设置,自行设置阶数、截止频率等滤波器参数(butter-worth filter)
- 2013-08-02 11:10:39下载
- 积分:1
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Normal distribution
正态分布程序例程,可以画双峰、三峰、四峰(Normal Distribution Program Routine,Can draw two peaks, three peaks, four peaks)
- 2020-12-17 13:49:12下载
- 积分:1
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MediaPlaye2054293172007
toi co the nghe nhac bang choung trinh nay
- 2009-04-15 20:41:51下载
- 积分:1
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ain_odnof_nesim1
ain matlab model.in matlab with pwm
- 2010-11-12 01:48:59下载
- 积分:1
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6ccf7866829a123
Direct torque control
- 2012-07-12 07:29:09下载
- 积分:1